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Explosion-proof structure of power battery

An explosion-proof structure, power battery technology, applied in structural parts, battery pack parts, battery boxes/jackets, etc., can solve problems such as unreliable sealing, battery leakage, and low electrolyte perfusion efficiency

Inactive Publication Date: 2019-04-05
江苏常丰精密科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the relatively small diameter of the electrolyte filling hole, the electrolyte filling efficiency is very low, and the requirements for the filling equipment are also relatively high. At the same time, due to an additional sealing process, there is a possibility of unreliable sealing, and there is an extra leakage for the battery. hidden danger point

Method used

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  • Explosion-proof structure of power battery

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Embodiment Construction

[0014] Such as figure 1 The explosion-proof structure of a power battery shown includes an explosion-proof valve 2 and a cover plate 1, the cover plate 1 is welded on the top of the battery case, and a connecting hole for installing the explosion-proof valve 2 is opened on the cover plate 1 , the explosion-proof valve 2 is installed in the connection hole, the center of the explosion-proof valve 2 is provided with an exhaust hole 4, and the valve core 5 is arranged in the described exhaust hole 4, and the valve core 5 piston connected in the exhaust hole 4, the upper end of the explosion-proof valve 2 is connected with the end cover 3, the valve core 5 is connected with the end cover 3 through the spring 11, and the explosion-proof valve 2 is provided with an exhaust passage 10. The two ends of the exhaust channel 10 communicate with the exhaust hole 4 respectively, and the center of the end cover 3 is provided with a through hole 9 . When the air pressure in the battery casi...

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Abstract

The invention relates to an explosion-proof structure of a power battery. The explosion-proof structure comprises an explosion-proof valve and a cover plate, the cover plate is welded at the top portion of the battery housing, the cover plate is provided with a connection hole configured to install the explosion-proof valve, the explosion-proof valve is installed in the connection hole, the centerof the explosion-proof valve is provided with an exhaust vent, the exhaust vent is internally provided with a valve core, the valve core is in piston connection with the internal portion of the exhaust vent, the upper end of the explosion-proof valve is connected with an end cap, the valve core is connected with the end cap through a spring, the explosion-proof valve is internally provided with an exhaust channel, the two ends of the exhaust channel communicate with the exhaust vent, and the center of the end cap is provided with a through hole. The explosion-proof structure is simple in structure, easy to manufacture and efficient and practical.

Description

technical field [0001] The invention relates to the technical field of power batteries, in particular to an explosion-proof structure of a power battery. Background technique [0002] During the use of the power battery, due to battery overcharge, overdischarge, short circuit, etc., it may cause high temperature and high pressure gas inside the battery. If these high temperature and high pressure gases cannot be discharged outside the battery in time, it may cause the battery to disintegrate and explode. , caught fire, and a serious accident occurred. Therefore, the power battery is generally equipped with an explosion-proof structure with the function of releasing internal pressure, which is used to discharge the high-temperature and high-pressure gas inside the battery to the outside of the battery in time to avoid battery explosion and improve the safety of use. [0003] At present, the explosion-proof structure of the power battery is generally integrated with the top c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M2/08H01M50/147H01M50/184H01M50/186H01M50/333H01M50/342
CPCH01M50/183H01M50/3425H01M50/35H01M50/333Y02E60/10
Inventor 郭志星刘康
Owner 江苏常丰精密科技有限公司
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